Knitting machinery



April 18, 1939. J. MORTON ET AL KNITTING MACHINERY Filed Nov 16, 1936 6Sheets-Sheet l AT ORA/[K7 April 18, 1939.

J. MORTON ET AL KNITTiNe MACHINERY 6 Sheets-Sheet 2 Filed Nov. 16, 1936"WI/ oks J, M07770 BY K55 /v/va I ATTORNEYS April 18, 1939. J. MORTON ElAL 5,

KNITTING MACHINERY Filed Nov. 16, 1936 e Sheets-Sheet 3 April 18, 1939.J. MORTON ET AL KNITTING MACHINERY Filed Nov. 16, 1936 6 Sheets-Sheet 4April 18, 1939. J. MORTON ET AL 2,155,146

KNITTING MACHINERY Filed Novv 16, 1936 6 Sheets-Sheet 5 1N VENTOR sApril 18, 1939. J. MORTON ET AL 2,155,146

KNITTING MACHINERY Filed Nov. 16, 1956 e Sheets-Sheet 6 Patented Apr.18, 1939 UNITED STATES xm'rrmo mommy James Morton and Robert StewartErskine Hannay, Carlisle, England, assignors to F. N. F. Limited, PurleyWay, Croydon, England, a British company Application November 16, 1936,Serial No. 111,154

In Great Britain February 21, 193

11 Claims.

This invention relates to warp knitting ma chines. In such machines theknitting operation is effected by a number of elements, includingknitting needles, which act on a number, of warps. Usually the elementsalso include a number of warp guides which are arranged to undergocyclic motion so as to lap the warps over the needles, thereby enablingthe needles to draw loops in the warps.

In existing warp knitting machines it is usual to mount batches of warpguides in blocks which are detachably mounted side by side upon somewhatheavy carrying bars. These bars are called warp guide bars or moreusually, guide bars. A warp knitting machine may have only one of thesebars but generally two, three or more such bars are provided. When thereis more than one guide bar, each bar, of course, carries a group of warpguides (i. e. a number of the aforesaid blocks) all the warp guides ineach group being disposed side by side along their respective bar.Further, when more than one guidebar is incorporated, the several guidebars are slidably mounted Qnrockerarms pivoted about an axis remote fromthe bars. The arrangement is such that, in the operation of the guidesto lap the warps around the knitting needles, the several guide barswith their guides are oscillated or rocked rapidly as a unit about thesaid axis. This oscillation of the warp guides takes place in verticalplanes between the needles. In addition to this oscillating motion, thewarpv guides are arranged to be reciprocated or shogged" sidewaysindependently' and as a rule selectively. This motion results in thewarps being carried across the needles and the combined shogging andoscillating motion serves to lap the warps upon. the needles. Thereciprocating or shogging motion is imparted to the warp guides bycausing the guide barsto be reciprocated longitudinally. By varying theextents of the reciprocating movements, corresponding pattern effects ofa varying nature can be produced in the fabric being knitted.

In these existing machines the warp guide assemblies, which include thewarp guides and the guide bars, are heavy and have comparatively highmoments of inertia. Thus, attempts to operate the machines at speedsmaterially higher than heretofore, have proved unsuccessful in practiceon account of the great stremes set up, due to the rapidly movingmasses, in the parts directly associated with. the guide bars and inother parts of the machines.

The invention aims at providing warp knitting machines in which the warpguide assemblies are inherently capable of being made to undergooscillatory motion at very high speeds without objectionable stressesbeing set up and without dangerous vibration occurring in the machines.

In accordance with the present invention a guide bar has its own pivotalmounting, that is to say, instead of being carried on rocker arms andswinging with these arms about a remote axis as has hitherto been thecase, a guide bar is independently mounted so as to be rockable aboutits own pivotal axis. Thus, one object of the invention consists in awarp knitting machine comprising in combination a plurality of warpguides, a warp guide bar to which said warp guides are fixed, supportingmeans for said guide bar arranged to permit said guide bar to beoscillated about an axis passing longitudinally through said guide barand means for oscillating said guide bar about said axis.

Another object of the invention is a warp knitting machine comprising incombination a warp guide assembly including a warp guide bar and aplurality of warp guides fixed to said bar and disposed at right anglesto the longitudinal axis of said bar, supporting means for said assemblyarranged to allow said assembly to be oscillated about an axis parallelto said first-mentioned axis 0 and passingin close proximity to thecentre of mass of said assembly and means for oscillating said assemblyabout said second-mentioned axis.

If a warp knitting machine has, as is usual, more than one guide bar,then in accordance with the invention, each bar has its own pivotalmounting. This arrangement enables the moments of inertia of the severalwarp guide assemblies to be kept low so that the stresses set up duringoperation are materially less than in the usual arrangement in which allthe bars with their rocker arms are rocked as a unit about an axisremote from the'bars. Accordingly, a further object of the inventionconsists in a warp knitting machine comprising in combination aplurality of warp guide bars, supporting means for said warp guide barsarranged to permit each warp guide bar to be oscillated about an axispassing longitudinally therethrough, means for oscillating each warpguide bar about its respective axis, and as many groups of warp guidesas there areguide bars, said groups of warp guides being fixedrespectively to said guide bars.

By virtue of the invention, certain constructional features can beadopted which materially facilitate the attainment of efllcient highspeed operation.

One of thase features consists in providing, in

combination with a guide bar or with a number of guide bars, a rockableor rotatable shaft (hereinafter termed a back shaft) through the mediumof which the associated guide bar or guide bars are oscillated. Anadvantage of such an arrangement is that the back shaft can be designedto be strong enough to resist torsional deflection and can be fitted soas to act on the guide bar at various points throughout its length, thusenabling the guide bar of light weight construction to be moved withprecision and without undesirable twist. Such twisting-is a seriousfactor in high speed operation and if there is more than one guide barfitted to the machine, it is found to be impossible to provide therequisite strength to resist torsion in the guide bar itself, owing tolimitations of space. By using a back shaft further removed from theknitting centre than the axis of oscillation of the guide bar it ispossible to provide a shaft of sufficient size to withstand the torsion,and being supported by a strong and rigid structure, may be caused toact with precision at high speeds without additional load on the movingparts.

' Another of the aforesaid features consists in providing for the guidebar or for each guide bar supporting means extending over the length ofthe bar. For example, such supporting means may consist of a longbearing or several coaxial bearings arranged at intervals, said hearingor bearings being provided in the aforesaid station-v ary supportingstructure. An advantage of this feature is that the guide bar isefiiciently supported throughout its length so that deflection of thebar, also a serious factor in high speed operation, can be practicallyprevented. Another advantage is that the guide bar can be made to movelongitudinally to and fro within the bearings so as to provide thenecessary shogging movements for the warp guides, while the guidebar canalso be turned about the axis of the bearing or bearings.

A further object of the invention therefore is a warp knitting machinecomprising in combination a plurality of warp guides, a warp guide barto which said warp guides are fixed. journal members fixed to said guidebar, and a supporting structure extending over the whole length of saidguide bar and formed with journal bearing surfaces arranged to permitsaid guide bar to be oscillated about an axis passing longitudinallythrough said guide bar.

Yet another object of the invention consists in a warp knitting machinecomprising in combination a plurality of warp guides, a warp guide barto which said warp guides are fixed, segmental journal members securedto said guide bar, and supporting means for said guide bar, saidsupporting means comprising journal bearings em bracing said journalmembers and the arrangement being such that said guide bar may beoscillated about an axis passing longitudinally therethrough.

The invention further comprises the elements and combinations of the.parts set forth in the annexed claims.

In order that the invention may be clearly understood and readilycarried into effect, some constructions in accordance therewith will nowFigure 4 shows a constructional detail, as

viewed in the direction of the arrow IV in Figure Figures 5 and 6 areviews of another constructional detail, Figure 5 being a section on theline VV of Figure 2 and Figure 6 being a section on the line VIVI ofFigure 5;

Figure 7 is a sectional elevation of mechanism for rocking a warp guidebar, the section being approximately on the line VIIVII of Figure 3;

Figure 8 is a view corresponding to a portion of Figure 2 but showing amodification, and Figure 9 is a plan of Figure 8; and

Figures 10 to 12 respectively, are views corresponding to Figure 8 butshowing further modifications.

Referring firstly to Figure 1, the knitting elements therein shownconsist of hook needles a, co-operating tongues b,,sinkers c and twowarp uides 11. Each of these elements constitutes one of a long seriescarried by a bar, the needle bar being denoted by 20, the tongue bar by2|, the sinker bar by 22 and each warp guide bar by 23. Each series iscomposedv of groups, or sections, of elements embedded in blocksremovably attached side by side to the respective bar, a needle blockbeing denoted by 24 a tongue block by 25, a sinker block by 26 and guideblocks by 21. The

manner in which the guide blocks are arranged side by side along a warpguide bar 23 is shown in Figure 3. The various blocks are preferablymade of light-weight mouldable material, for example, a synthetic resinsuch as Bakelite or other light-weight organic plastic material, or

alternatively a light-weight fusible alloy.

Although two warp guide bars are shown, it is to be understood that onlyone of such bars or any other practical number thereof may be providedin a machine.

The manner in which the knitting elements are arranged and operated isbriefly as follows:

As regards the needles a, the needle bar'20 is carried by several shortarms 28, of which one is shown, and these arms are adapted to oscillateabout the axis of a supporting shaft 29 arranged directly belowtheknitting centre. As regards the tongues 17, the tongue bar 2| iscarried 'by several short arms 30, of which one is shown, and these armsare also adapted to oscillate about the axis of the shaft 29. guided ina groove in the arcuate shank of the associated knitting needle. Asregards the sinkers c, the sinker bar 22 is carried by several shortarms 3|, of which one is shown, and these arms are secured to a rockshaft 32, about whose axis they are adapted to oscillate. regards thewarp guides d, each guide bar 23 has its own com- Warp threads f are ledthrough the upper and lower guides d and looped round the hooks oftheknitting needles a.

In the operation of the machine; during which Each tongue is slidablyall the elements a, b, c and d oscillate in timed relationship, thetongues b co-operate with the hooks to cast off the loops from theneedles and thus form stitches, the sinker-s serve to control theformation and length of the stitches, and the warp guides serve to lapthe threads I round the needles preparatory to each successivestitchforming operation. Shogging movements imparted to the warp guidebars by mechanism described below, assist in the needle-lappingoperation and also serve to produce pattern effects in the knittedfabric, indicated by g. If desired, cross wefts as indicated by h may besupplied in known manner for incorporation in the fabric.

The manner in which the warp guide bars are supported and operated willnow be described in greater detail.

The journals 35 consist of segmental members preferably made ofself-lubricating material secured (for example, by screws) in pairs tothe respective thin flat bar 23. The segmental members composing eachpair are arranged at oppo site sides of the respective bar (see Figure2) and their surfaces together present portions of the surface of acylinder. These pairs are arranged at intervals throughout the length ofthe bar, the arrangement being illustrated at the middle of Figure 3.The members 35 are journalled in part circular bearings provided in thetop and bottom halves of the casings 33,34, which are partly hollow andextend from side to side of the machine, each casing being formed withannular ends 40 mounted in supporting brackets 4| on the frame of themachine. In Figure 3, as regards the upper warp guide bar casing 33,only the right hand end thereof and the supporting bracket 41 at thatend are shown. The casings 33, 34 constitute normally stationarysupports for the guide bars and parts of their operating mechanism.

Each warp guide bar is of comparatively nar- The self-lubricatingmaterialof which the seg-.

mental members 35 are preferably made may be a metal or alloyimpregnated with oil or graphite or a light-weight organic plasticmaterial incorporating graphite.

For the purpose of rocking the guide bars 23, there areprovided in therespective casings 33, 34 two rockable back shafts 42, 43 which extendalongside the respective guide bars and are journalled at spacedintervals in bearing bushes 44 fitted into the interiors of the casings.At intervals along each of the back shafts 42, 43, arms 45 are providedin pairs, one pair of these arms being shown in Figure 3 and other viewsof the arms being given in Figures 2, 5 and 6. As shown, each pair ofarms extends from a boss 46 secured to the respective back shaft.Distance pieces 41 are provided on each back shaft between the bearingbushes 44 and the bosses 46 and also between successive bushes 44(Figure 3). Each pair of arms 45 is connected to one of a plurality ofspaced eye-pieces 48 on the respective guide bar 23 by an eccentricdevice, which consists of an eccentric 49 with end trunnions 50 (Figures5 and 6), the eccentric having a neat turning and sliding fit in theeye-piece 43 and the trunnions having a neat turning fit in extensions5| rigidly bolted and pinned to the arms 45. The arrangement is suchthat, when the back shafts 42, 43 are turned in their bearings, theguide bars 23 are also forced to turn in their bearings, the rockingforce being transmitted through the eccentric devices 49, 59, which turnrelatively to both the eye-pieces 48 and the arm extensions 5 tocompensate for variations in the distance between these parts.

It will be manifest that the two warp guide bars described andillustrated are each rockable relatively to the other with the journals35 arranged at intervals along the middle of the bar itself, the axis ofsaid journals extending through the body of the bar; that rocking forcesare applied to each of the guide bars at intervals throughout itslength; and that the bearings in which the journals 35 turn constitutealso the guideways along which the shogging movements of the bars takeplace.

Each of the back shafts 42, 43 has its own mechanism for rocking it, themechanisms for the respective shafts being substantially similar andbeing enclosed in casings 52, 53 at opposite sides of the machine(Figure 3). The rocking mechanism of the upper back shaft 42 is shown inFigure 7, such mechanism involving the use of two eccentrics. As shown,eccentrics 54, 55 are keyed to parallel shafts 56, 51. Theeccentric-carrying shafts 56, 5'! are driven from the shaft 58 throughpairs of gear wheels 59, 6B and 6 I, 62. The wheels 59 and 50 have thesame number of teeth and the wheel 6| has twice as many teeth as thewheel 62, so that the shaft 51 rotates at the same speed as the shaft58, and the shaft 56 rotates at twice that speed. The ends of therespective eccentric rods 63, 64 are coupled together by a floating link65, and this link is coupled between its ends to a lever 66 having astationary fulcrum 61. The lever 66 isconnected at opposite ends bylinks 68 to a lever 69 secured to a shaft 10 sleeving the back shaft anddetachably coupled thereto by a coupling 10a (Figure 3),

The coupling between the back shaft 43 and its mechanism differs fromthe foregoing in that a shaft 1|, rocked by mechanism corresponding tothat shown in Figure 7, is coupled at Ila to the back shaft 43.

If desired, provision may be made for adjusting e axis of connectionbetween the floating link and the lever 66 and/or for adjusting thephase relationship of each eccentric to the other.

The guide bars derive their shogging motions from pattern cams securedone above the other to a rotary cam shaft. In Figure 3 the cam shaft isdenoted by I2 and one of the pattern cams by 13. The cam followerconsists of a roller 14 on a lever 15 which is attached by an adjustablelink 16 to the adjacent end of the respective guide bar. The roller ismaintained against the cam by a strong tension spring I5 acting on thelever 15 against the pull of a steadying tension spring 11 acting on thefar end of the guide bar.

To facilitate the operation of threading the guides d, provision is madefor pivoting the upper casing 33 and its guide bar into -a raisedposition, such being possible by virtue of the nature of the mounting ofthe annular bar ends 40 in the brackets 4|. The aforesaid provisionincludes a handle 18 (Figures 1, 3 and 4) which can be turned rearwardlyand downwardly until it has displaced and has become locked by aself-locking manually-releasable catch I8 which is pivotally mounted ona plate I8 on the adjacent bracket 4| and which normally rests upon astop I8 In Figure 4, the handle 18 is shown locked by the catch I8 Priorto raising the casing 33 by the handle I8, th'e coupling Illa betweenthe shafts 42 which is a fixture, by means of a screwed clamping pin 19(Figure 1) adapted to be passed into a slot I3 (Figure 3) in the uppercasing and screwed into the lower casing.

Various modifications in constructional fea tures can be adopted. Forexample, various forms of mechanisms are suitable for transmitting therequisite rocking movement to the warp guide bars, and different formsof such mechanism will now be described with reference to Figures 8 to12, which are more or less diagrammatic.

According to Figures 8 and 9, a warp guide bar 23 is rocked by arms 80forming parts of a lever structure, the ends of these arms being joinedby a transverse forked bar 8| which engages the head 82 of a projectionon the bar. The arms 80 are secured to a sleeve 80 on a spindle 80constituting the fulcrum of the lever structure. The arms '80 are rockedthrough the intermediary of a short countershaft 83 which is geared tothe back shaft 42 and has two countercams 84, 85 respectively engagingfollower rollers 86, 81 carried by lever arms on the sleeve 80 The backshaft 42 is rotatable by any appropriate rotary shaft of the machine,but if desired the arrange ment could be such that the shaft 42 isrocked.

Obviously, the fork device constituted by'the forked bar 8| and head 82could be replaced by an equivalent device such as a pin-and-slot.

According to Figure 10, both warp guide bars 21 have their bearings in asingle supporting casing 30 and receive their rocking movement from asingle back shaft 42 The shaft 42 has countercams SI, 92 whose followersare rollers 93, 94 on levers 95, 95 which are fulcrumed on the easing 90and are connected by eccentric devices similar to those shown in Figures2, 3, 5 and 6, to the respective guide bars. A spring 91 maintains therollers in contact with their cams. In this construction, the bearingsfor the segmental members 35 are provided in a structure 98 carried bybrackets 99 constituting caps for the bearings of the shaft 42 Accordingto Figure 11, both guide bars are rocked from a single back shaft 42through forked arms I08 thereon which engage the heads of projectionsllll on the respective guide bars.

According to Figure 12, both guide bars receive their rocking movementfrom a single back shaft 42 through the intermediary of a verticallyslidable block H0 which is constrained by pin-andslot guides Ill, H2 andis raised and lowered by countercams H3, ill on the back shaft, thefollowers of said cams being rollers H5, H6 on the block. The heads ofextensions H1, H8 on the respective guide bars are engaged by forks onthe block. The pin-and-slot guides could be replaced by parallel armspivotally connected at one end to the block H0 and to stationary pointson the surrounding casing.

It will be understood that the rocking mechanisms according to Figures 8to 12 would pref- 1 erabl'y be applied to the guide bars at severallongitudinally spaced places to distribute the rocking forces throughoutthe length of the bars.

As an alternative to eccentric devices, or fork connections, between therocking arms or the equivalent and the guide bars, all as-hereinbefo're,described, simple pin joints may be provided. In

any such arrangement, lilowever, the guide bar would be laterallydisplaced alternately towards and away from the rock shaft during therocking movement and accordingly the bar would not be rigidly secured tothe segmental members 35 but would be laterally displaceable relativelythereto.

If desired, instead of providing as the guide bar journals segmentalmembers 35 made of selflubricating material, these can be made of anygood journal metal and provision can be made for the application oflubricant. The casing constituting a supporting bearing for a guide bar,or guide bars, may be made as a receptacle for lubricant, in which eventsome form of seal would be provided between adjacent segmental membersto prevent egress of the lubricant. For example, absorbent material suchas felt or cotton could be packed into the spaces between adjacentsegmental members, and such material would serve to lubricate thebearing surfaces during the shogging movements of the guide bar. Figure10 shows a construction of easing which constitutes a suitablereceptacle for lubricanti In the arrangement illustrated by Figures 1and 2, the knitting needles act approximately horizontally and the axisof oscillation of the needles is located directly below the knittingcentre. The invention is not confined to such an arrangement, as thesame'can be modified for example by re-arranging the needles to worksubstantially vertically and conformablyre-arranging the other knittingelements and associated parts, including the so-called back shaft.

We claim:

1. In a warp knitting machine, in combination, an assembly includingfirstly a warp guide bar and secondly a plurality of journal memberslocated laterally of said guide bar and distributed along the lengththereof, a plurality of warp guides fixed to said guide bar, andsupporting means for said guide bar extending along the length thereof,said supporting means comprising journal bearings embracing saidassembly, and the arrangement being such that said guide bar may beoscillated about an axis passing longitudinally within said journalbearings.

2. In a warp knitting machine, in combination, a warp guide bar, aplurality of warp guides fixed to said guide bar, a plurality ofsegmental journal members secured laterally to said guide bar, and

supporting means for said guide bar and distributed along the lengththereof, said supporting be oscillated about an axis passinglongitudinally within said journal bearings.

3. In a warp knitting machine, in combination, a warp guide bar, aplurality of warp guides fixed to said guide bar, a plurality of journalmembers mounted laterally at points along the length of said guide bar,a supporting structure formed with journal surfaces embracing at each ofsaid points said journal members and arranged to .permit said guide bartogether with said journal members to be oscillated about an axiswithin'said guide bar and to be reciprocated longitudinally along saidaxis, means for oscillating said guide bar about said axis, and meansfor reciprocating said guide bar longitudinally.

4. In a warp knitting machine, in combination,

a warp guide bar, a row of warp guides mounted bracing said joiunalmembers and arranged to permit said guide bar to be oscillated about anaxis passing longitudinally through said guide bar.

5. In a warp'knitting machine, the combination of a warp guide barmountedfor oscillation about an axis passing longitudinally through saidguide bar, plurality of warp guides carried by said guide bar, a backshaft disposed parallel to said guide bar, and mounted for oscillationabout an axis passing longitudinally through said back shaft, means foroscillating said back shaft about said last-mentioned axis, a radial armfixed to said back shaft, a radial arm fixed to said guide bar and aconnecting member pivotally connected to said first-mentioned radial armabout an axis parallel, to said previously mentioned axes and pivotallyconnected to said second-mentioned radial arm about a further axisparallel to said previously-mentioned axes, said connecting memberpermitting and transmitting rocking movement from said first-mentionedradial arm to said second-mentioned radial arm.

6. In a warp knitting machine, the combination of a plurality of warpguide bars mounted for oscillation respectively about parallel axespassing respectively longitudinally through said guide bars, a pluralityof groups of warp guides, each of said groups of warp guides beingcarried by one of said guide bars, a cam shaft disposed parallel to saidguide bars and mounted for turning movement about an axis passinglongitudinally through said cam shaft, means for turning said cam shaftabout said last mentioned axis, a plurality of oscillatable membersoperatively associated with said cam shaft and in engagement with saidguide bars at points distributed along the length thereof, said camshaft being operative to impart oscillating motion to said guide barsabout said first-mentioned axes through the medium of said oscillatablemembers.

7. In a warp knitting machine, the combination of a warp guide barmounted for oscillation about an axis passing longitudinally throughsaid guide bar, a plurality of warp guides carried by said guide bar, acam shaft disposed parallel to said guide bar, supporting means for saidcam shaft arranged to allow said cam shaft to be turned about alongitudinal axis passing longitudinally therethrough, means for turningsaid cam shaft about said second-mentioned axis, a plurality ofintermediate members operatively associated with said cam shaft anddistributed along said guide bar whereby said guide bar is oscillatedabout said first-mentioned axis by said cam shaft.

8. In a warp knitting machine, in combination, two guide bars mountedfor oscillation about two parallel axes passing respectively throughsaid guide bars, two groups of warp guides fixed respectively to saidguide bars, a cam shaft bearing two cams and disposed parallel to saidaxes, said cam shaft being mounted for undergoing turning motion about alongitudinal axis, means for turning said cam shaft about saidlast-mentioned axis and two rockers in engagement respectively with saidcams and operatively associated respectively with said guide bars, thearrangement being such that turning motion of said cams causesoscillation of said guidebars in timed relationship about saidfirst-mentioned axes.

9. In a warp knitting machine, the combination of a warp guide barmounted for oscillation about an axis passing longitudinally throughsaid guide bar, a plurality of warp guides carried by said guide bar, aback shaft disposed parallel to said guide bar and mounted foroscillation aboutva longitudinal axis, multi-eccentric mechanismincluding at least two eccentrics adapted to be rotated at differentspeedsand links operatively connected between said eccentrics and saidback shaft for oscillating said back shaft about said last-mentionedaxis and means operatively associated with said back shaft and with saidguide bar whereby oscillating motion about said firstmentioned axis isimparted from said back shaft to said guide bar. a I

10. In a warp knitting machine, a low inertia guide bar assemblycomprising in combination, a light weight guide bar of small crosssectional area in relation to its length, a continuous row of warpguidessecured along said guide bar, and supporting meansvfor said guidebar extending adjacent thereto in sliding engagement therewith andorganized to support said guide bar at .a plurality of pointsintermediate the ends of said row of warp guides to hold said guide baragainst deflection while permitting said guide bar to be rocked about anaxis extending along said supporting means and to be reciprocatedlongitudinally relatively to said supporting means.

11. In a warp knitting machine, a plurality of low inertia guide barassemblies, each comprising in combination a light weight guide bar ofsmall cross sectional area in relation to its length, a continuous ,rowof warp guides secured along said guide bar, and supporting means forsaid guide bar extending adjacentthereto in sliding engagementtherewith, and organized to support said uide bar at a plurality ofpoints intermediate the ends of said row of warp guides to hold saidguide bar against deflection while permitting said guide bar to berocked about an axis passing through said supporting means and to bereciprocated longitudinally relatively to said supporting means.

JAMES MORTON.

ROBERT STEWART ERSKINE HANNAY.

